Hi, have you try a transmission relay< have you check the transmission solenoid fuse?
can you check fuse # XX at the fuse box located on the engine compartment.
fuse is good which relay is it
locate the relay here let me know when located do you have a test light ?
yes i have a test light
i tested the relay it is good
OK LEST CHECK THE RELAY CONECTOR FOR POWER WITH THE TEST LIGHT AND TURN THE IGNITION ON SEE HOW MANY POWERS ARE PRECENT.